Internet Assigned Numbers Authority

The Internet Assigned Number Authority (IANA) oversees the actual distribution of IP addresses and other important registered numbers for the Internet.

IANA assigns port numbers. In the past, these numbers were documented through the RFC document series; the last of these documents was RFC 1700, which is now outdated. Now, the assignments are listed on the IANA server, constantly updated and revised when new information is available and new assignments are made.